I m a 54 year old black female, currently taking warfarin, amlodipine/benazp, bystolic. I have had 2 PE s and also have asthma. lately I ve been having heart flutters, shortness of breath while walking, especially in Chgo cold weather. My doc has taken ekg, echo, chest xray, and has ordered 24 hour heart monitor. I still feel like somethings wrong within my body not energetic and lethargic, should I demand more test or may my condition be weather related?